Depends whats happening, strangely Im less inclined at CGs coz they take my contributions but have done it for an explorer friend who had never done combat outside the training mission and never played in Open either. 1st time fighting, in an SLF, at a CG, and in Open, he loved it

Pretty sure still exploring in Solo though.
I havent done it since the new update but assume it now works like CQC matching, you carry on with your game until a match is found and you can then choose so it doesnt stop the game like it used to? Have to try it now. Usually got a match pretty quickly for BH (few seconds to few minutes), havent tried others.
The connections can still be hit and miss but anecdotally that seems to be all or nothing, its ether gonna work for everyone or its not gonna work for anyone at that time, doesnt seem to be individual connections. Sometimes best just to give up and try an hour later and 100% fine and no issue at all, have been in MC for couple hours then no issue. Just getting the initial connection seems to be wonky sometimes or it'll keep crashing very soon after joining, once its stable its stable.